Computer Networks

Question

I have confusion between the following terms:

• process to process delivery
• node to node delivery 
• host to host delivery
• end to end delivery

which layer provides which service and the major confusion is in the difference between them?

Answer 1

1. process-to-process delivery is handled by the transport layer by means of port numbers.
2. node-to-node delivery is handled by the data link layer (and ofcourse the physical layer) by means of MAC address.
3. host-to-host delivery is handled by the network layer by means of IP address.
4. end-to-end delivery - not sure on this one it might be synonymous to process to process delivery or application to application delivery